[Scenes] Update TriangleSurfaceCutting scene to use a bigger mesh with texture

[epernod]

Following the PR #2300 here is a new version of the scene TriangleSurfaceCutting.scn with a texture. See picture in PR #2300

For the Regression program I had to add in the scene:
CImgPlugin as requiredPlugin to be able to use this line:
<OglModel name="Visual" texcoords="@../meshLoader.texcoords" texturename="textures/colorMap.png" />

[ci-depends-on https://github.com/sofa-framework/Regression/pull/19]

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• it does not generate new scene test failures.
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[sofabot]

[ci-depends-on] detected during build #1.

To unlock the merge button, you must

• Merge or close Update triangularSurfaceCutting mesh Regression#19
  For this build, Regression/ExternalProjectConfig.cmake.in will be edited by builders with
  GIT_REPOSITORY https://github.com/sofa-framework/Regression
  GIT_TAG 3a670e8c8ac5d233e7e9f5af680058dbfb6be337

[epernod]

[ci-build][with-all-tests]

[sofabot]

[ci-depends-on] detected during build #2.

To unlock the merge button, you must

• Merge or close Update triangularSurfaceCutting mesh Regression#19
  For this build, Regression/ExternalProjectConfig.cmake.in will be edited by builders with
  GIT_REPOSITORY https://github.com/sofa-framework/Regression
  GIT_TAG 3a670e8c8ac5d233e7e9f5af680058dbfb6be337

[sofabot]

[ci-depends-on] detected during build #3.

To unlock the merge button, you must

• Merge or close Update triangularSurfaceCutting mesh Regression#19
  For this build, Regression/ExternalProjectConfig.cmake.in will be edited by builders with
  GIT_REPOSITORY https://github.com/sofa-framework/Regression
  GIT_TAG 3a670e8c8ac5d233e7e9f5af680058dbfb6be337

[sofabot]

[ci-depends-on] detected during build #4.

To unlock the merge button, you must

• Merge or close Update triangularSurfaceCutting mesh Regression#19
  For this build, Regression/ExternalProjectConfig.cmake.in will be edited by builders with
  GIT_REPOSITORY https://github.com/sofa-framework/Regression
  GIT_TAG 3a670e8c8ac5d233e7e9f5af680058dbfb6be337

[hugtalbot]

I guess that for stability purposes you are not fixing only the corners but the few points close to the corner on the top edge? Is it correct @epernod ?